Turbine-driven locomotive



July 1o, 1923. 2,461,278

F. I JUNGsTRM TURBINE DRIYEN LOCOMO-TIVE Filed may 2, 1922 2Sheets-sheet 1 jjj-f Patented July 10, 192.3.

Unirse 'lerares 1,461,278 Parser caries.

FREDBIK LJUNGSTRM, OF LIDINGO-BREVIK, SWEDEN, ASSIGNOR T0 AKTIEBOLAGETLJUNGSTEMS ANGTURBIN, A CORPORATION, OF STOCKHOLM, SWEDEN.

TURBINE-DRIVEN LOCOMOTIVE.

Application `filed. May 2,

To aZZ whom t may cof/wcm.'

Be it known that I, FREDRIK LJUNGSTRM, a subject of the King of Sweden,residing at Lidingo-Brevik, Sweden, have invented certain new and usefulImprovements in Turbine-Driven Locomotives, of which the following is aspecification.

It has previously been suggested in connection with turbine-drivenlocomotives to use two carriages of which the fore carriage supports asteam boiler and therear one a condenser pertaining to the locomotive.According to different constructions the driving turbine together withits mechanical power transmitting means has been located as a whole or adivided aggregate either on the boiler carriage or on the condensercarriage. It has however also been suggested to divide the turbine`aggregate into two or more aggregates placed in part on the boilercarriage and in part on the condenser carriage, the fo're and rear partsof said carriages having been designated as suitable places for saidaggregates. Y At all events it has however been diiiicult to arrangeguiding wheels in front of the driving wheels, in case the latter arelocated on the fore part of a carriage and particularly on the fore partof the condenser carriage.

This invention relates to an arrangement in locomotives consisting oftwo carriages, the driving aggregate being placed on the fore part ofthe rear carriage. The invention consists in this, viz, that some or allof 35 the fore wheels of the rear carriage are brought together asdriving wheels in a bogie, which by means of a coupling arranged or acertain axis of rotation is connected with the carriage running beforeor its bogie, the latter thus serving as guiding earriage or guidingwheels of the machinery Ogle.

The accompanying drawings illustrate a locomotive constructed accordingto the invention and consisting of two coupled carriages, the drivingmachinery being located on the fore part of the rear carriage. Figs. 1and 3 are side views of two embodiments of a locomotive according to theinvention. Fig. 2 illustrates on a longer scale the couling used betweenthe carriages shown in Fig. 1, and Fig. 4 the coupling used between thecarriages 1n Fig. 3.

Referring to Figs. 1 and 3, 1 designates the fore carriage supportingthe steam boiler 1922. 'Serial No. 557,861.l

2 and the coal bunker 3. The rear carriage 4 supports an air-cooledcondenser 5, an accumulating liquid receptacle 6 and the drivingmachinery 8 placed on the fore part 7 of the carriage, said machineryconsisting in the present case of a turbine together with mechanicalmeans transmitting power to the driving wheels 9.

In Fig 1 the fore carriage 1, the boiler carriage, is supported partlyby the fore bogie 10 and partly by three other` pairs of wheels 11 whichmay be ,brought together in a bogie or rigidly )ournalled in the framework. The rear carriage, the condenser carriage, is at its rear portionsupported by a bogie 12. According to the invention all miv the drivingwheels 9 of the fore part ofthe 'Y rear carriage are in this casebrought together in a bogie 13 supporting the mechanical powertransmittingl means aswell as the turbine, theflexible connectionbetween the bogie 13 and the condenser 'receptacle 6 being locatedat theoutlet of the turbine at 14. Obviously however the turbine may also berigidly connected with the receptacle 6, the iexible connectionin suchcase being arranged in the mechanical power transmitting means.

Said machinery bogie 13 is coupled to the fore carriage, if the framework 15 constitutes its truck, o'r to the bogie, if the frame work 15constitutes a bogle pertaining to the boiler carriage. The wheels 11 ofthe fore carriage or-of its rear bogie form guiding wheels of themachinery bogie 13, in case the coupling device be so constructed that acertain axis of rotation is obtained.

In the last named figure and in Fig. 2 such a coupling of a well knownand very simple type is illustrated, consisting of loops 17 and 18respectively extending from the carriages and connected by a pin or bolt16. The coupling permits the mutual turning of the carriages due to thecurves and the like to take place about the axis 19.

Fig.4 3 illustrates how the bogie 13 is coupled to the frame work of theboiler carriage, although the rear part of this carriage is supported bya bogie 20. The bogie 13 is coupled to the carriage 1 by means of acoupling bringing about an axis of rotation between the carriagespositioned outside the coupling, for instance at 21. Said coupling shownin Fig. '4 is lof well known type and consists of joints 22 connectingthe carriages,

one joint 23 preventing the carriages from moving vertically inrelation-to each other. Obviously the wheels of the boiler carriageserve also in this case asguiding wheels of the machinery bogie 13. Insuch case the guiding carriage ought to be provided with smaller wheelsthan the guided carriage.

According to the invention also other embodiments, than those describedabove may be imagined. rIihus for instance turbine aggregates may beplaced on the rear bogie of the fore carriage While the same method ofcoupling is maintained.,

What I claim as new and desire to secure by Letters Patent of the UnitedStates is 1. In a turbine driven locomotive including two carriages,wheels supporting said carriages and a coupling, an arrangementcharacterized by at least one pair of the fore wheels of the rearcarriage being brought together as driving wheels in a bogie connectedby means of a coupling with the carriage running before it which thusserves as guiding carriage for the bogie of the rear 25 carriage.

. menare 2. vAn arrangement according to claim 1 characterized by therear Wheels of the fore carriage bein brought together in a bogie, thefore bogle of the rear carriage belng coupled to the frame of the forecarriage.

3. An arrangement according to claim 1 characterized by the fore bogieof the rear carriage supporting the mechanical means transmitting owerfrom the turbine yto the driving whee s.

4. An arrangement according to claim 3, characterized by the provisionof a iieXible connection effectin transmission of power of the turbineto t e rear carriage.

5. An arrangement according to claim 1, characterized by the guidingcarriage being provided with smaller wheels than the guided bogie.

In testimony whereof I aiiix my signature in presence of two witnesses.

FREDRIK LJ UNGSTRM. Witnesses: V

S. WENsoN, L. BERG v. LINDE.

